undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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293
test/jdk/java/awt/dnd/DragSourceGCrashTest.java
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293
test/jdk/java/awt/dnd/DragSourceGCrashTest.java
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/*
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* Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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@test
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@bug 4888520
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@summary tests that drag source application invoked via debug java does not
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crash on exit after drop on other Java drop target application
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@key headful
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*/
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.Panel;
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import java.awt.Point;
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import java.awt.Robot;
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import java.awt.datatransfer.DataFlavor;
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import java.awt.datatransfer.StringSelection;
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import java.awt.datatransfer.Transferable;
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import java.awt.dnd.DnDConstants;
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import java.awt.dnd.DragGestureEvent;
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import java.awt.dnd.DragGestureListener;
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import java.awt.dnd.DragSource;
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import java.awt.dnd.DragSourceAdapter;
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import java.awt.dnd.DragSourceDropEvent;
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import java.awt.dnd.DragSourceListener;
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import java.awt.dnd.DropTarget;
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import java.awt.dnd.DropTargetAdapter;
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import java.awt.dnd.DropTargetDropEvent;
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import java.awt.dnd.DropTargetListener;
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import java.awt.event.InputEvent;
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import java.io.File;
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import java.io.InputStream;
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import java.io.Reader;
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public class DragSourceGCrashTest {
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volatile Frame frame;
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volatile Panel panel;
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public static void main(String[] args) throws Exception {
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DragSourceGCrashTest test = new DragSourceGCrashTest();
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EventQueue.invokeAndWait(test::init);
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try {
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test.start();
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} finally {
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EventQueue.invokeAndWait(()-> test.frame.dispose());
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}
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}
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public void init() {
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frame = new Frame("target - DragSourceGCrashTest");
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panel = new Panel();
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frame.add(panel);
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frame.setBounds(100, 100, 100, 100);
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DropTargetListener dtl = new DropTargetAdapter() {
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public void drop(DropTargetDropEvent dtde) {
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dtde.acceptDrop(DnDConstants.ACTION_MOVE);
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Transferable t = dtde.getTransferable();
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try {
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DataFlavor df = new DataFlavor(
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"text/plain;class=java.io.Reader");
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Reader r = df.getReaderForText(t);
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// To verify the bug do not close the reader!
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dtde.dropComplete(true);
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} catch (Exception e) {
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e.printStackTrace();
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dtde.dropComplete(false);
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}
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}
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};
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new DropTarget(frame, dtl);
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frame.setVisible(true);
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}
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public void start() throws Exception {
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Robot robot = new Robot();
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robot.waitForIdle();
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robot.delay(1000);
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ProcessResults pres = null;
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Point endPoint = panel.getLocationOnScreen();
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endPoint.translate(panel.getWidth() / 2, panel.getHeight() / 2);
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String jdkPath = System.getProperty("java.home");
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String javaPath = jdkPath + File.separator + "bin" +
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File.separator + "java";
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String[] cmd = {
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javaPath, "-cp",
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System.getProperty("test.classes", "."),
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"Child",
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String.valueOf(endPoint.x),
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String.valueOf(endPoint.y)
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};
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Process process = Runtime.getRuntime().exec(cmd);
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pres = ProcessResults.doWaitFor(process);
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if (pres.stderr != null && pres.stderr.length() > 0) {
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System.err.println("========= Child VM System.err ========");
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System.err.print(pres.stderr);
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System.err.println("======================================");
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}
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if (pres.stdout != null && pres.stdout.length() > 0) {
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System.err.println("========= Child VM System.out ========");
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System.err.print(pres.stdout);
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System.err.println("======================================");
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}
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if (pres.exitValue != 0) {
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throw new RuntimeException("FAILURE: child java exited " +
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"with code " + pres.exitValue);
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}
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}
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}
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class Child {
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volatile Frame frame;
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volatile Panel panel;
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public static void main(String[] args) throws Exception {
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int endX = Integer.parseInt(args[0]);
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int endY = Integer.parseInt(args[1]);
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Point endPoint = new Point(endX, endY);
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Child child = new Child();
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EventQueue.invokeAndWait(child::init);
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try {
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child.start(endPoint);
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} finally {
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EventQueue.invokeAndWait(() -> child.frame.dispose());
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}
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}
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public void init() {
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frame = new Frame("source - DragSourceGCrashTest");
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panel = new Panel();
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frame.add(panel);
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frame.setBounds(200, 100, 100, 100);
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final DragSourceListener dsl = new DragSourceAdapter() {
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public void dragDropEnd(DragSourceDropEvent dsde) {
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System.err.println("DragSourceListener.dragDropEnd(): " +
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"exiting application");
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System.exit(0);
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}
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};
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DragGestureListener dgl = new DragGestureListener() {
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public void dragGestureRecognized(DragGestureEvent dge) {
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dge.startDrag(null,
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new StringSelection("test"), dsl);
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}
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};
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new DragSource().createDefaultDragGestureRecognizer(panel,
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DnDConstants.ACTION_MOVE, dgl);
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frame.setVisible(true);
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}
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public void start(Point endPoint) throws Exception {
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Robot robot = new Robot();
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robot.waitForIdle();
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robot.delay(1000);
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Point startPoint = panel.getLocationOnScreen();
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startPoint.translate(
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panel.getWidth() / 2,
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panel.getHeight() / 2
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);
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robot.mouseMove(startPoint.x, startPoint.y);
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robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
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for (Point p = new Point(startPoint); !p.equals(endPoint);
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p.translate(
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Integer.compare(endPoint.x - p.x, 0),
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Integer.compare(endPoint.y - p.y, 0)
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)) {
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robot.mouseMove(p.x, p.y);
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robot.delay(50);
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}
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robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
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long timeout = 30000;
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Object LOCK = new Object();
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synchronized (LOCK) {
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LOCK.wait(timeout);
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System.err.println(System.currentTimeMillis() + " end");
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}
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System.err.println("WARNING: drop has not ended within " + timeout +
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" ms, exiting application!");
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System.exit(0);
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}
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}
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class ProcessResults {
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final static long TIMEOUT = 60000;
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public int exitValue;
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public String stdout;
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public String stderr;
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public ProcessResults() {
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exitValue = -1;
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stdout = "";
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stderr = "";
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}
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/**
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* Method to perform a "wait" for a process and return its exit value.
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* This is a workaround for <code>Process.waitFor()</code> never returning.
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*/
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public static ProcessResults doWaitFor(Process p) {
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ProcessResults pres = new ProcessResults();
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InputStream in = null;
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InputStream err = null;
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long startTime = System.currentTimeMillis();
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try {
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in = p.getInputStream();
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err = p.getErrorStream();
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boolean finished = false;
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while (!finished) {
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try {
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while (in.available() > 0) {
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pres.stdout += (char)in.read();
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}
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while (err.available() > 0) {
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pres.stderr += (char)err.read();
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}
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// Ask the process for its exitValue. If the process
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// is not finished, an IllegalThreadStateException
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// is thrown. If it is finished, we fall through and
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// the variable finished is set to true.
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pres.exitValue = p.exitValue();
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finished = true;
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}
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catch (IllegalThreadStateException e) {
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if (System.currentTimeMillis() > startTime + TIMEOUT) {
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System.err.println("WARNING: child process has not " +
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"exited within " + TIMEOUT + " ms, returning" +
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" from ProcessResults.doWaitFor()");
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pres.exitValue = 0;
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return pres;
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}
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// Process is not finished yet;
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// Sleep a little to save on CPU cycles
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Thread.currentThread().sleep(500);
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}
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}
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if (in != null) in.close();
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if (err != null) err.close();
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}
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catch (Throwable e) {
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System.err.println("doWaitFor(): unexpected exception");
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e.printStackTrace();
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}
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return pres;
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}
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}
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